3.79
ENGINE / COOLING SYSTEM
3
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
3. Place the crankshaft in a truing stand or V-blocks and
measure the runout where indicated below with a dial
indicator.
IMPORTANT: The MAG side crankshaft plain bearing
is
not s erviceable. Cra nkcase re placement is
required if the bearing is damaged or has excessive
wear. The cra nkshaft is reusable if it meets
specifications and M AG side b earing s urface is n ot
groved, pitted, damaged or excessively worn.
PTO Side Crankcase Bearing Service
Bearing Removal
NOTE: Due to ext remely clos e t olerances an d
minimal wea
r, the be arings mu st be inspected
visually, and by feel. Look for signs of discoloration,
scoring or g alling. T urn t he inn er ra ce of each
bearing. T he be arings sho uld turn smoot hly an d
quietly. Th e out er ra ce of ea ch be aring s hould f it
tightly in the cra nkcase. The inne r ra ce s hould be
firm with minimal side to side mo vement and n o
detectable up and down movement.
NOTE: Bearings are st ressed during the remov al
p
rocess and must not be re-used!
1. Remove and discard the PTO side cra nkshaft seal.
Re
place with new for assembly.
2. If not already performed, remove the (2) screws that
sec
ure the bearing retainer to the case.
3. Remove the retaining ring.
4. Support the crankcase and drive, press, or extract the
(
3) bearings with a blind bearing remover.
Maximum Runout:
Inner (C) - 0.00118” (0.03 mm)
Outer (D) - 0.00590” (0.15 mm)
Bearing
Spacer
Retaining
Ring
Seal
Bearing
Retainer
8 ft. lbs.
(11 Nm)
Apply Loctite® 272™
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